TRICARBONYL TECHNETIUM-99m OR RHENIUM-188 LABELED CYCLIC RGD DERIVATIVES, A PREPARATION METHOD THEREOF, AND A PHARMACEUTICAL COMPOSITION CONTAINING THE DERIVATIVES AS AN ACTIVE INGREDIENT FOR USE IN THE DIAGNOSIS OR TREATMENT OF ANGIOGENESIS-RELATED DISEASES
申请人:Lee Byung Chul
公开号:US20130064766A1
公开(公告)日:2013-03-14
The present invention relates to tricarbonyl technetium-99m or rhenium-188 labeled cyclic RGD derivatives, a preparation method thereof, and a pharmaceutical composition containing the derivative as an active ingredient for use in the diagnosis or treatment (radiotherapy) of angiogenesis-related diseases. The tricarbonyl technetium-99m or rhenium-188 labeled cyclic RGD derivatives of the present invention has a high subnanomolar affinity to integrin α
v
β
3
(also called as a vitronectin receptor) that is activated in an angiogenic action induced by a tumor, reflects a high tumor image of the tricatvonyl technetium-99m labeled cyclic RGD derivative after initial intake in an animal in which cancer cells are transplanted, and acts exclusively upon cancer cells having selectively activated integrin α
v
β
3
because of a substantially low intake into the liver and intestines, compared to existing known radioactive isotope labeled cyclic RGD derivatives. These results show that the rhenium-188 labeled derivative, a therapeutic nuclide using the same precursor as used in the technetium-99m labeling, effectively inhibits the growth of a tumor and demonstrates therapeutic efficacy when administered via tail vein injection to an animal model bearing tumor, compared to a case where only saline has been injected, thereby making it useful as a medicine for the diagnosis or treatment of angiogenesis-related diseases.
本发明涉及三羰基锝-99m或铼-188标记的环状RGD衍生物,其制备方法以及含有该衍生物作为活性成分的药物组合物,用于诊断或治疗与血管生成相关的疾病(放射治疗)。本发明的三羰基锝-99m或铼-188标记的环状RGD衍生物具有与整合素αvβ3(也称为玻璃蛋白连接受体)的高亚纳摩尔亲和力,该受体在肿瘤诱导的血管生成作用中被激活,反映了在移植了癌细胞的动物中,三羰基锝-99m标记的环状RGD衍生物具有高肿瘤成像,且与现有已知的放射性同位素标记的环状RGD衍生物相比,仅对选择性激活整合素αvβ3的癌细胞起作用,因肝脏和肠道的摄取量明显低于现有已知的放射性同位素标记的环状RGD衍生物。这些结果表明,使用与锝-99m标记相同的前体制备的铼-188标记衍生物,有效抑制肿瘤的生长,并在通过尾静脉注射给患有肿瘤的动物模型时表现出治疗效果,与仅注射生理盐水的情况相比,因此可用作诊断或治疗与血管生成相关的疾病的药物。